Aston-Martin DB9 Top Speed: The Aston-Martin DB9 GT 5.9 V12 - [2015] has a top speed of 183 mph (294.5 kph) Aston-Martin DB9 Acceleration: This DB9 accelerates 0-60mph (96.6 kph) in 4.3 seconds or 0-100kph in 4.4 and can achieve an estimated 1/4 mile drag time in 12.28 seconds with a trap speed of 111.4 mph.